Some background information first: our campaign's setting consisted of a collection of city-states, all loosely connected by trade deals and other alliances. Each city-state was protected by a totem animal of sorts (essentially a regular real-life creature, except its CR was boosted to the mid 20s - for context, our party was around level 12 at the end of the campaign), and each city-state's ruler possessed a special tablet which granted them control over both their totem animal. Someone who knew what they were doing could even alter its capabilities. Not something you want to end up in the wrong hands, in other words.

So naturally, our party had been hired to recover a stolen tablet. This part of the mission actually went pretty well. We'd tracked the tablet down to a rival city-state's ruler's mansion, so it was simply a matter of sneaking in, subduing the guards without them raising the alarm, stealing the tablet back, and sneaking back out, all of which happened without a hitch. That came on our way back to deliver the tablet to its rightful owner.

We'd decided to rest up in an old fort for the night, but before we could leave the next morning, we had an unpleasant discovery. The ruler who had stolen the tablet had discovered it was gone, worked out we were the ones who took it, tracked us down, and come to take it back. Oh, and she'd brought her city-state's army with her to ensure that happened. The ultimatum was clear: return the tablet or be brutally slaughtered.

Naturally, we started brainstorming ways to take a third option, during which I started looking through my character sheet to see if there was anything I could do. You see, I had taken the Ritual Caster feat,* so I was looking to see if I knew any rituals that might be useful. What follows is more or less the conversation I had with the DM after I spotted something.

Me: I might have an idea. The tablet is magic, right?
DM: Of course.
Me: So could I use the Create Magic Item ritual to make a fake copy of it? Something that would look and act like the real thing, but wouldn't actually do anything?
DM: How exactly does the ritual work?
Me: *Shows DM the ritual's description in the PHB.*
DM: You can certainly try it, though will have a chance to tell it's a fake when you give it to her.
Me: (To the party) What do you guys think? Is this worth trying?
Party: Sure.
Me: Great! This ritual takes an hour to cast, so can you go make sure {Ruler] and her army don't attack us before I'm done?

Amazingly enough, the plan worked flawlessly, with the ruler happily leaving with her army and the fake tablet, allowing us to go deliver the real thing to its rightful owner.

*For those who are unaware, 4e attempted to solve 3.5e's Linear Warriors, Quadratic Wizards problem with a levelling system that meant two characters at the same level would (mostly) have the same number of at-will, once-per-encounter and once-per-day abilities regardless of what class they were. This meant there was no space for the spellcasting classes to learn all the various non-combat spells with casting times longer than one round by levelling up. So they decided to categorise all those spells as rituals, and made you take the Ritual Caster feat if you wanted to learn any. I believe if you wanted to expand the list of rituals your character knew beyond what this gave you, you had to take further feats.

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